Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CA6F1

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-DSU · AIRBUS A-320

Hex
4CA6F1
Octal
23123361
Decimal
5,023,473
Country
IE
Tail
EI-DSU
Type
A320
No current signal · last broadcast 4h ago
Flights observed
520
Distinct callsigns
20
Country
IE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 4CA6F1.

Country allocation

The ICAO 24-bit address 4CA6F1 falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
ITY2028 - 10 2026-06-30
ITY427 ITA Airways 9 2026-06-30
ITY426 - 9 2026-06-30
ITY333 ITA Airways 8 2026-06-21
ITY318 - 8 2026-06-21
ITY2029 - 8 2026-06-21
ITY1604 - 7 2026-06-27
ITY1601 - 7 2026-06-27
ITY1723 - 5 2026-06-27
ITY1704 ITA Airways 5 2026-06-27
ITY1647 ITA Airways 5 2026-07-03
ITY1569 - 5 2026-07-01
ITY1566 - 5 2026-06-30
ITY1176 - 5 2026-06-16
ITY058 - 5 2026-07-06
ITY803 - 4 2026-07-02
ITY802 - 4 2026-07-01
ITY722 ITA Airways 4 2026-06-08
ITY717 ITA Airways 4 2026-06-09
ITY585 - 4 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ITY407 - Jul 14, 17:25 UTCJul 14, 19:00 UTC1h 35m
2026-07-14 ITY404 - Jul 14, 14:05 UTCJul 14, 15:55 UTC1h 50m
2026-07-14 ITY715 - Jul 14, 10:55 UTCJul 14, 12:50 UTC1h 55m
2026-07-14 ITY716 - Jul 14, 08:15 UTCJul 14, 09:50 UTC1h 35m
2026-07-14 ITY861 - Jul 14, 04:30 UTCJul 14, 05:30 UTC1h 0m
2026-07-13 ITY862 - Jul 13, 21:20 UTCJul 13, 22:10 UTC50m
2026-07-13 ITY063 MAD → FCO Jul 13, 18:00 UTCJul 13, 19:45 UTC1h 45m
2026-07-13 ITY060 - Jul 13, 14:00 UTCJul 13, 16:10 UTC2h 10m
2026-07-13 ITY1432 - Jul 13, 04:45 UTCJul 13, 05:45 UTC1h 0m
2026-07-12 ITY1431 - Jul 12, 20:15 UTCJul 12, 21:15 UTC1h 0m
2026-07-06 ITY801 - Jul 6, 16:10 UTCJul 6, 17:40 UTC1h 30m
2026-07-06 ITY800 - Jul 6, 13:40 UTCJul 6, 15:05 UTC1h 25m
2026-07-06 ITY061 - Jul 6, 09:55 UTCJul 6, 11:50 UTC1h 55m
2026-07-06 ITY058 - Jul 6, 06:35 UTCJul 6, 08:35 UTC2h 0m
2026-07-05 ITY867 - Jul 5, 17:55 UTCJul 5, 18:50 UTC55m
2026-07-05 ITY866 FCO → TUN Jul 5, 16:05 UTCJul 5, 16:50 UTC45m
2026-07-05 ITY1270 - Jul 5, 14:05 UTCJul 5, 14:35 UTC30m
2026-07-05 ITY1269 - Jul 5, 12:10 UTCJul 5, 12:40 UTC30m
2026-07-05 ITY1264 - Jul 5, 10:30 UTCJul 5, 10:55 UTC25m
2026-07-05 ITY1263 - Jul 5, 08:45 UTCJul 5, 09:15 UTC30m
2026-07-05 ITY1770 - Jul 5, 06:25 UTCJul 5, 07:10 UTC45m
2026-07-04 ITY1769 - Jul 4, 18:10 UTCJul 4, 18:50 UTC40m
2026-07-04 ITY585 - Jul 4, 09:40 UTCJul 4, 10:35 UTC55m
2026-07-04 ITY582 - Jul 4, 07:35 UTCJul 4, 08:25 UTC50m
2026-07-03 ITY2125 - Jul 3, 19:25 UTCJul 3, 20:10 UTC45m
2026-07-03 ITY1632 BRI → LIN Jul 3, 16:55 UTCJul 3, 18:00 UTC1h 5m
2026-07-03 ITY1647 LIN → BRI Jul 3, 14:30 UTCJul 3, 15:55 UTC1h 25m
2026-07-03 ITY1764 - Jul 3, 12:05 UTCJul 3, 13:20 UTC1h 15m
2026-07-03 ITY1765 - Jul 3, 09:15 UTCJul 3, 10:30 UTC1h 15m
2026-07-03 ITY1605 AHO → LIN Jul 3, 07:05 UTCJul 3, 08:05 UTC1h 0m
2026-07-03 ITY1600 LIN → AHO Jul 3, 05:05 UTCJul 3, 06:05 UTC1h 0m
2026-07-03 ITY8008 FCO → LIN Jul 3, 03:10 UTCJul 3, 04:00 UTC50m
2026-07-02 ITY721 ATH → FCO Jul 2, 17:20 UTCJul 2, 19:05 UTC1h 45m
2026-07-02 ITY718 FCO → ATH Jul 2, 14:45 UTCJul 2, 16:25 UTC1h 40m
2026-07-02 ITY061 - Jul 2, 10:35 UTCJul 2, 12:40 UTC2h 5m
2026-07-02 ITY058 - Jul 2, 07:05 UTCJul 2, 09:00 UTC1h 55m
2026-07-02 ITY803 - Jul 2, 03:45 UTCJul 2, 05:05 UTC1h 20m
2026-07-01 ITY802 - Jul 1, 20:35 UTCJul 1, 21:50 UTC1h 15m
2026-07-01 ITY337 MRS → FCO Jul 1, 17:45 UTCJul 1, 18:45 UTC1h 0m
2026-07-01 ITY336 FCO → MRS Jul 1, 15:35 UTCJul 1, 16:50 UTC1h 15m
2026-07-01 ITY2071 LIN → FCO Jul 1, 13:20 UTCJul 1, 14:15 UTC55m
2026-07-01 ITY1648 - Jul 1, 09:50 UTCJul 1, 11:05 UTC1h 15m
2026-07-01 ITY1649 - Jul 1, 07:10 UTCJul 1, 08:30 UTC1h 20m
2026-07-01 ITY1569 - Jul 1, 05:05 UTCJul 1, 05:55 UTC50m
2026-06-30 ITY1566 LIN → AHO Jun 30, 20:00 UTCJun 30, 21:00 UTC1h 0m
2026-06-30 ITY353 ORY → LIN Jun 30, 17:35 UTCJun 30, 19:05 UTC1h 30m
2026-06-30 ITY3LO LIN → ORY Jun 30, 15:15 UTCJun 30, 16:35 UTC1h 20m
2026-06-30 ITY427 HAM → LIN Jun 30, 12:45 UTCJun 30, 14:15 UTC1h 30m
2026-06-30 ITY426 LIN → HAM Jun 30, 09:55 UTCJun 30, 11:20 UTC1h 25m
2026-06-30 ITY2028 - Jun 30, 07:30 UTCJun 30, 08:20 UTC50m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the EI-DSU page for operator, model, and routing details .

Mode-S 4CA6F1 frequently asked

What is Mode-S code 4CA6F1?
4CA6F1 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-DSU.
Where is Mode-S 4CA6F1 registered?
Mode-S code 4CA6F1 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA6F1 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA6F1, octal 23123361, decimal 5,023,473.
What flights does 4CA6F1 operate?
Mode-S 4CA6F1 has broadcast 20 distinct callsigns, including ITY2028, ITY427, ITY426, ITY333, ITY318.